WO2021057470A1 - Procédé de détermination du degré d'obstruction de filtre anti-poussière d'un climatiseur, et climatiseur - Google Patents

Procédé de détermination du degré d'obstruction de filtre anti-poussière d'un climatiseur, et climatiseur Download PDF

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Publication number
WO2021057470A1
WO2021057470A1 PCT/CN2020/114075 CN2020114075W WO2021057470A1 WO 2021057470 A1 WO2021057470 A1 WO 2021057470A1 CN 2020114075 W CN2020114075 W CN 2020114075W WO 2021057470 A1 WO2021057470 A1 WO 2021057470A1
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Prior art keywords
air conditioner
determination
current value
current
dust filter
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PCT/CN2020/114075
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English (en)
Chinese (zh)
Inventor
陈建龙
张飞
陆建松
鞠龙家
宋威
姚永祥
李淑云
Original Assignee
青岛海尔空调器有限总公司
海尔智家股份有限公司
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Publication of WO2021057470A1 publication Critical patent/WO2021057470A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/39—Monitoring filter performance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data

Definitions

  • the present invention relates to the technical field of air conditioning, in particular to a method for determining the degree of clogging of a dust filter of an air conditioner and an air conditioner.
  • the air inlet of the indoor unit of the existing air conditioner is provided with a dust filter to filter the air entering the indoor unit and prevent debris such as dust from entering the indoor unit. After long-term use, dust and other debris will easily adhere to the dust filter, which will block the mesh of the dust filter. If cleaning is not carried out in time, it will not only reduce the amount of air entering the indoor heat exchanger, affect the cooling and heating effect of the air conditioner, but also increase the energy consumption of the air conditioner and shorten the service life of the air conditioner. Most of the existing air conditioners use the user to roughly estimate the use time of the air conditioner to clean the dust filter, which brings unnecessary extra burden to the user, and it is very likely that the dust filter is clogged and cannot be handled. Although some air conditioners have a reminder function, they only rely on the use time of the air conditioner to remind the blockage, and it is impossible to accurately judge the degree of blockage of the dust filter.
  • An object of the present invention is to provide a method for determining the degree of clogging of a dust filter of an air conditioner with high accuracy.
  • Another further object of the present invention is to provide an air conditioner capable of determining the degree of clogging of the dust filter.
  • the present invention provides a method for determining the degree of clogging of a dust filter of an air conditioner, including:
  • the degree of clogging of the dust filter is determined according to the change trend of multiple determination current values and the size of the initial current value and the determination current value.
  • the obtaining step of determining the current value includes:
  • the set number of current sampling values are averaged to obtain a judging current value.
  • the collection time of the current value of the motor is the set time after the air conditioner is turned on and running in the operating mode.
  • Obtaining multiple judgment current values is to obtain 5-10 judgment current values continuously.
  • the step of determining the degree of clogging of the dust filter according to the change trend of multiple determination current values and the size of the initial current value and the determination current value includes:
  • the step of determining the degree of clogging of the dust filter according to the change trend of multiple determination current values and the size of the initial current value and the determination current value includes:
  • the value range of the preset current determination difference is 3mA-5mA.
  • the value range of the running time judgment threshold is 200h-500h.
  • the operation mode of the air conditioner includes a heating mode, a cooling mode, and an air supply mode
  • the value range of the initial current value is 20mA-30mA.
  • the invention also discloses an air conditioner, including:
  • the indoor unit has an indoor fan, and a dust filter is installed at the air inlet of the indoor unit;
  • the controller has a memory and a processor, and a control program is stored in the memory.
  • the control program is executed by the processor, it is used to realize the aforementioned method for determining the degree of clogging of the dust filter of the air conditioner.
  • the controller is further configured to send a cleaning signal when it is determined that the dust filter is in a clogged state, and clear the accumulated operating time of the air conditioner.
  • the method for determining the degree of clogging of the air conditioner and the air conditioner dust filter of the present invention proposes to determine the initial current value of the motor of the indoor fan according to the operation mode of the air conditioner, and then obtain multiple determination current values of the motor in the operation mode.
  • the change trend of the judgment current value and the size of the initial current value and the judgment current value are used to determine the degree of clogging of the dust filter, which improves the accuracy of the judgment of the degree of clogging of the dust filter, reduces misjudgments, and improves user experience.
  • the method for determining the degree of clogging of the dust filter of the air conditioner of the present invention is that a plurality of determination current values are sequentially reduced, the difference between the initial current value and the last determination current value is greater than the preset current determination difference and the air conditioner's When the accumulated running time is greater than the running time judgment threshold, it is judged that the dust filter is in a clogged state. Compared with the prior art, the judgment accuracy rate is greatly improved, and the user experience is better.
  • Fig. 1 is a schematic side view of an indoor unit of an air conditioner according to an embodiment of the present invention.
  • Fig. 2 is a schematic flowchart of a method for determining the degree of clogging of a dust filter of the air conditioner shown in Fig. 1.
  • Fig. 3 is a schematic diagram of the composition of an air conditioner according to an embodiment of the present invention.
  • Fig. 4 is a schematic flowchart of a control method of an air conditioner according to an embodiment of the present invention.
  • Fig. 1 is a schematic side view of an indoor unit 100 of an air conditioner 300 according to an embodiment of the present invention.
  • 2 is a schematic flowchart of a method for determining the degree of clogging of the dust filter 103 of the air conditioner 300 shown in FIG. 1.
  • Fig. 3 is a schematic diagram of the composition of an air conditioner 300 according to an embodiment of the present invention.
  • the embodiment of the present invention will take the air conditioner 300 with the wall-mounted indoor unit 100 as an example, and describe the composition of the air conditioner 300 and the method for determining the degree of clogging of the dust filter 103 of the air conditioner 300 in detail.
  • the air conditioner 300 of the embodiment of the present invention generally includes: an indoor unit 100 and an outdoor unit 200.
  • the indoor unit 100 includes a housing 110, an air inlet 101, an air outlet 102, an air guide plate 140, an indoor heat exchanger 120, an indoor fan 130, and a dust filter 103.
  • An air inlet 101 is opened on the top of the housing 110, and a dust filter 103 is provided at the air inlet 101.
  • An air outlet 102 is provided at the lower part of the front side of the housing 110. The air outlet 102 opens forward and downward.
  • the housing 110 may be a long strip structure extending in a transverse direction, and the air outlet 102 is a strip opening extending in a transverse direction.
  • An air deflector 140 is provided at the air outlet 102.
  • the indoor heat exchanger 120 and the indoor fan 130 are arranged in the housing 110.
  • the indoor heat exchanger 120 is used to exchange heat with the air entering the housing 110 from the air inlet 101 to form heat exchange air. Specifically, cold air is used for cooling, and hot air is used for heating.
  • the indoor fan 130 is preferably a cross-flow fan with an axial direction extending in a transverse direction, which is used to encourage air to flow from the indoor heat exchanger 120 to the air outlet 102, and then blow into the room.
  • the indoor fan 130 has a motor 131.
  • the outdoor unit 200 includes a casing, and a compressor 210, an outdoor heat exchanger 220, and an outdoor fan 230 disposed inside the casing.
  • the indoor unit 100 and the outdoor unit 200 together constitute a compression refrigeration cycle system, so as to realize cooling or heating of the indoor environment.
  • the compression refrigeration cycle system utilizes the compression phase change cycle of the refrigerant in the compressor 210, the outdoor heat exchanger 220, the indoor heat exchanger 120, and the throttling device to realize heat transfer.
  • the method for determining the degree of clogging of the dust filter 103 of the air conditioner 300 according to the embodiment of the present invention includes the steps:
  • S208 Determine the degree of clogging of the dust filter 103 according to the change trend of the multiple determination current values and the size of the initial current value and the determination current value.
  • step S202 and step S204 may be executed first and then step S206 may be executed, and step S206 may also be executed first and then step S202 and step S204 may be executed.
  • the initial current value of the motor 131 of the indoor fan 130 in the different operating modes of the air conditioner 300 is set at the factory. Depending on the operation mode of the air conditioner 300, it has a different initial current value.
  • the operation mode of the air conditioner 300 generally includes a heating mode, a cooling mode, and an air supply mode.
  • the heating mode of the air conditioner 300 has a corresponding initial heating current value
  • the cooling mode has a corresponding initial cooling current value
  • the air supply mode has a corresponding initial current value for air supply.
  • the value range of the initial current value is generally 20mA-30mA.
  • the determination method of the embodiment of the present invention proposes to simultaneously consider the change trend of multiple determination current values and the size of the initial current value and the determination current value to determine the degree of clogging of the dust filter 103, which can improve the accuracy of the determination of the degree of clogging of the dust filter 103 Rate, reduce misjudgments, and improve user experience.
  • the air conditioner 300 of the embodiment of the present invention further includes: a controller 400.
  • the controller 400 has a memory 401 and a processor 402.
  • a control program 410 is stored in the memory 401. When the control program 410 is executed by the processor 402, it is used to implement the aforementioned method for determining the degree of clogging of the dust filter 103 of the air conditioner 300.
  • the controller 400 is generally installed in the indoor unit 100.
  • the step of determining the current value includes:
  • the current value of the motor 131 is collected to obtain a current sampling value of the motor 131;
  • the set number of current sampling values are averaged to obtain a judging current value.
  • the method for determining the degree of clogging of the dust filter 103 of the air conditioner 300 in the embodiment of the present invention is to collect the current value of the motor 131 after the air conditioner 300 is turned on and run in the operating mode to obtain a current sampling value of the motor 131. Then average the continuously set number of current sampling values to obtain a judgment current value, record multiple judgment current values, and then based on the change trend of these multiple judgment current values and the size of the initial current value and the last judgment current value To determine the degree of clogging of the dust filter 103, the numerical value is obtained rigorously, and the result is highly accurate.
  • the collection time of the current value of the motor 131 is the set time after the air conditioner 300 is turned on and running in the operating mode. For example, when entering the operating mode for 5 minutes, or entering the operating mode for 1 minute, or entering the operating mode for 30 seconds. Since the judgment method of the embodiment of the present invention provides a basis for judging the degree of clogging of the dust filter 103 according to the change trend of multiple judgment current values, the time point of obtaining the current of the motor 131 is limited, and the timing of obtaining the value can be fixed, so The change trend reflects more accurately.
  • 3-5 current sampling values obtained by continuous collection are averaged to obtain a judgment current value; obtaining multiple judgment current values is to obtain 5-10 judgment current values continuously. For example, average the collected 5 current sampling values to obtain a judging current value; repeat the foregoing steps 5 times to obtain 5 judging current values. For another example, the 4 current sampling values obtained by the collection are averaged to obtain a judgment current value; the foregoing steps are repeated 7 times to obtain 7 judgment current values. For another example, average the three current sampling values obtained to obtain a judging current value; repeat the foregoing steps 10 times to obtain 10 judging current values.
  • the dust filter 103 is determined according to the change trend of multiple determination current values and the size of the initial current value and the determination current value.
  • the steps of clogging include:
  • the method for determining the degree of clogging of the dust filter 103 of the air conditioner 300 in the embodiment of the present invention is to determine when the multiple determination current values decrease sequentially and the difference between the initial current value and the last determination current value is greater than the preset current determination difference
  • the dust filter 103 is in a clogged state, and compared with the prior art, the judgment accuracy rate is improved.
  • the value range of the preset current judgment difference is 3mA-5mA, for example, 3mA, 4mA, and 5mA.
  • the dust filter 103 is determined according to the change trend of multiple determination current values and the size of the initial current value and the determination current value.
  • the steps of clogging include:
  • the method for judging the degree of clogging of the dust filter 103 of the air conditioner 300 in the embodiment of the present invention is to sequentially reduce the multiple judging current values, the difference between the initial current value and the last judging current value is greater than the preset current judging difference and the cumulative operation
  • the time is greater than the running time determination threshold, it is determined that the dust filter 103 is in a blocked state.
  • the value range of the preset current judgment difference is 3mA-5mA, for example, 3mA, 4mA, and 5mA.
  • the value range of the running time judgment threshold is 200h-500h, for example, 200h, 300h, 400h, 500h.
  • the method for acquiring the accumulated operating time may adopt the existing technology in the field of air conditioner 300, which will not be described in detail here.
  • FIG. 4 is a schematic flowchart of a control method of the air conditioner 300 according to an embodiment of the present invention.
  • the control method of the air conditioner 300 according to the embodiment of the present invention includes the steps:
  • S406 Average the set number of current sampling values to obtain a judging current value. Generally, the collected 3-5 current sampling values are averaged to obtain a judging current value.
  • S410 Determine whether the multiple determination current values decrease in sequence.
  • the determination current value acquired each time is stored in the controller 400, and after a plurality of determination current values are accumulated, the determination is made.
  • step S412 When the determination result of step S410 is YES, obtain the initial current value of the motor 131 of the indoor fan 130 of the air conditioner 300 corresponding to the operation mode.
  • the value range of the initial current value is generally 20mA-30mA. If the judgment result of step S410 is no, return to step S404. When the judgment result of step S410 is no, the judgment current value obtained last two times can be eliminated from the multiple judgment current values stored in the controller 400, and only the judgment current value before the two times is retained, and then the step is repeated. S404 and S406.
  • S414 Determine whether the difference between the initial current value and the last determined current value is greater than the preset current determination difference.
  • the value range of the preset current judgment difference is 3mA-5mA.
  • step S416 When the determination result of step S414 is YES, determine whether the cumulative operating time of the air conditioner 300 is greater than the operating time determination threshold.
  • the value range of the running time judgment threshold is 200h-500h. If the judgment result of step S414 is no, return to step S404.
  • step S418 When the judgment result of step S416 is YES, it is judged that the dust filter 103 is in a clogged state. If the judgment result of step S416 is no, return to step S404.
  • the air conditioner 300 sends a cleaning signal, and clears the accumulated operating time of the air conditioner 300 to zero.
  • the method for determining the degree of clogging of the dust filter 103 of the air conditioner 300 of the embodiment of the present invention includes:
  • step S402 the operation mode of the air conditioner 300 is acquired, and it is assumed to be the cooling mode.
  • steps S404, S406, and S408 each time the air conditioner 300 is turned on and runs in the cooling mode, the current value of the motor 131 is collected to obtain a current sampling value of the motor 131. Collect 5 times to obtain 5 current sampling values, and average the 5 current sampling values to obtain a judging current value. Steps S404 and S406 are continuously repeated 7 times to obtain 7 judgment current values, which are assumed to be 27 mA, 26 mA, 25 mA, 24 mA, 23 mA, 22 mA, and 21 mA, respectively.
  • step S410 it is judged whether the seven judgment current values decrease sequentially. The judgment result of step S410 is yes.
  • step S412 the initial current value of the motor 131 of the indoor fan 130 of the air conditioner 300 corresponding to the cooling mode is acquired, and it is assumed to be 23 mA.
  • step S414 it is determined whether the difference between the initial current value of 23 mA and the last determined current value of 21 mA is greater than the preset current determination difference. It is assumed that the preset current judgment difference is 3mA. The judgment result of step S416 is NO. Return to step S404. Remove the last two judgment current values obtained from the multiple judgment current values stored in the controller 400, that is, 22mA, 21mA, and only retain the judgment current values before these two times, that is, retain 27mA, 26mA, 25mA, 24mA, 23mA , And then repeat steps S404 and S406.
  • the method for determining the degree of clogging of the dust filter 103 of the air conditioner 300 according to the embodiment of the present invention includes:
  • step S402 the operation mode of the air conditioner 300 is acquired, and it is assumed to be the cooling mode.
  • steps S404, S406, and S408 each time the air conditioner 300 is turned on and runs in the cooling mode, the current value of the motor 131 is collected to obtain a current sampling value of the motor 131. Collect 5 times to obtain 5 current sampling values, and average the 5 current sampling values to obtain a judging current value. Steps S404 and S406 are repeated 5 times in succession to obtain 5 judgment current values, which are assumed to be 26.5 mA, 26 mA, 25 mA, 22 mA, and 19 mA, respectively.
  • step S410 it is determined whether the values of the five determination currents decrease sequentially. The judgment result of step S410 is yes.
  • step S412 the initial current value of the motor 131 of the indoor fan 130 of the air conditioner 300 corresponding to the cooling mode is acquired, and it is assumed to be 30 mA.
  • step S414 it is determined whether the difference between the initial current value of 23 mA and the last determined current value of 19 mA is greater than the preset current determination difference. It is assumed that the preset current judgment difference is 3mA. The judgment result of step S414 is YES.
  • Step S416 is performed to determine whether the cumulative operating time of the air conditioner 300 is greater than the operating time determination threshold. Assume that the threshold for the running time judgment is 400h, and the cumulative running time is 450h. The judgment result of step S416 is YES.
  • Step S418 is performed to determine that the dust filter 103 is in a clogged state.
  • step S420 the air conditioner 300 sends out a cleaning signal and clears the accumulated operating time of the air conditioner 300.
  • the method for determining the degree of clogging of the air conditioner 300 and the dust filter 103 of the air conditioner 300 proposes to determine the initial current value of the motor 131 of the indoor fan 130 according to the operation mode of the air conditioner 300, and then obtain the current of the motor 131 several times.
  • the degree of clogging of the dust filter 103 is determined according to the change trend of multiple determination current values and the size of the initial current value and the determination current value, which improves the accuracy of determining the degree of clogging of the dust filter 103, reduces misjudgments, and improves user experience.
  • the method for judging the degree of clogging of the dust filter 103 of the air conditioner 300 in the embodiment of the present invention is that the multiple judging current values are successively decreased, and the difference between the initial current value and the last judging current value is greater than the preset current judging difference. And when the cumulative running time is greater than the running time judgment threshold, it is judged that the dust filter 103 is in a blocked state. Compared with the prior art, the judgment accuracy rate is greatly improved, and the user experience is better.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
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Abstract

L'invention concerne un procédé permettant de déterminer le degré d'obstruction d'un filtre anti-poussière d'un climatiseur. Le procédé comprend les étapes consistant à : acquérir un mode de fonctionnement d'un climatiseur ; acquérir une valeur de courant initiale, correspondant au mode de fonctionnement d'un moteur électrique d'un ventilateur d'intérieur du climatiseur ; acquérir une pluralité de valeurs de courant de détermination du moteur électrique dans le mode de fonctionnement ; et en fonction d'une tendance de changement de la pluralité de valeurs de courant de détermination et des amplitudes de la valeur de courant initiale et des valeurs de courant de détermination, déterminer le degré d'obstruction d'un filtre anti-poussière. Selon le climatiseur et le procédé de détermination du degré d'obstruction d'un filtre anti-poussière du climatiseur de la présente invention, le taux de précision pour déterminer le degré d'obstruction du filtre anti-poussière est amélioré, et une détermination incorrecte est réduite, ce qui permet d'améliorer l'expérience de l'utilisateur.
PCT/CN2020/114075 2019-09-26 2020-09-08 Procédé de détermination du degré d'obstruction de filtre anti-poussière d'un climatiseur, et climatiseur WO2021057470A1 (fr)

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CN201910919948.XA CN110749036B (zh) 2019-09-26 2019-09-26 空调器的滤尘网的堵塞程度的判定方法及空调器
CN201910919948.X 2019-09-26

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CN110749036B (zh) * 2019-09-26 2021-09-21 重庆海尔空调器有限公司 空调器的滤尘网的堵塞程度的判定方法及空调器
CN112033875A (zh) * 2020-08-28 2020-12-04 海信（山东）空调有限公司 一种滤网更换检测方法、装置、电器设备及存储介质
CN112414919B (zh) * 2020-11-11 2024-05-03 厦门浦睿智能电子有限公司 基于直流电机工作电流测算净化器滤网寿命的方法及装置

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JP2011033214A (ja) * 2009-07-30 2011-02-17 Hitachi Appliances Inc 空気調和機
CN102519118A (zh) * 2011-12-29 2012-06-27 Tcl空调器(中山)有限公司 空调清洁度自动提醒的方法和装置
CN105352027A (zh) * 2014-08-21 2016-02-24 广东美的制冷设备有限公司 空调器室内机及其脏堵控制方法
CN110749036A (zh) * 2019-09-26 2020-02-04 青岛海尔空调器有限总公司 空调器的滤尘网的堵塞程度的判定方法及空调器

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Publication number Priority date Publication date Assignee Title
JP2011033214A (ja) * 2009-07-30 2011-02-17 Hitachi Appliances Inc 空気調和機
CN102519118A (zh) * 2011-12-29 2012-06-27 Tcl空调器(中山)有限公司 空调清洁度自动提醒的方法和装置
CN105352027A (zh) * 2014-08-21 2016-02-24 广东美的制冷设备有限公司 空调器室内机及其脏堵控制方法
CN110749036A (zh) * 2019-09-26 2020-02-04 青岛海尔空调器有限总公司 空调器的滤尘网的堵塞程度的判定方法及空调器

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